You did do basic homework
Visit this website, USCIS clearly requires ETA-750B for NIW. Also, make sure you need to submit duplicates (i.e., two indential copies, both originally signed).
http://uscis.gov/graphics/howdoi/eligibility2.htm
Visit this website, USCIS clearly requires ETA-750B for NIW. Also, make sure you need to submit duplicates (i.e., two indential copies, both originally signed).
http://uscis.gov/graphics/howdoi/eligibility2.htm